Review on 🌀 Hands-Free Bladeless Neck Fan, KOFOHO Personal Mini Fan Around Neck Neckband, Sports Fan with 3 Speeds, 360 Rotation, Adjustable USB Rechargeable Wearable Cooler Fan for Office, Outdoor, and Travel by Bryan Reed

I didn't even know it was on unless it was on high speed (because I could hear it) and even then it was difficult for me to understand from which direction the air blows. The battery lasted 1.5 hours with constant use; It even took 4 hours to fully charge. It's quite bulky so your neck gets sweaty where it rests, which was a deal breaker for me. The arms are posable, but fall off when you walk, so you have to constantly adjust them. I sent it back after one use.